Apparatus for piston assembly



Dec. 27, 1927. 1,654,110

' H. M. BROWN APPARATUS FOR PISTON ASSEMBLY Filed Feb. 2, 192's 235% flu-aw y ltl Elli

Patented Dec. 27, 1927.

UNITED STATES PATENT OFFICE.

M. BROWN, OF NORTH PLAINFIELD, NEW JERSEY, ASSIGNOR 'IO STANDARD OIL DEVELOPMENT COMPANY, A CORPORATION OF DELAWARE.

AIPARATUS FOR PISTON ASSEMBLY.

Application filed February 2, 1926.

This invcntion relates to improvements in appliances and methods for assembling pis tons ot the ringed type in engine cylinders. The invention will be tally understood from the following description, taken in connection with the accompanying drawing, in Which l 1 is an end elevation of the device;

Fig. 2 is a perspective vievv showing the device closed; and

Fig". 3 is a vertical section on line Ill- H1 of Fig. 1.

Referring to the drawings, reference I1umore 1 denotes an open cylinder or sleeve severed vertically to form a slit 2, in order to permit expansion and contraction. The cylinder .inay be made of flexible metal such as thin sheet steel, or of other suitable material that is relatively strong and durable.

Handles 3 and lare secured to the sleeve on opposite sides of the slit. These handles have pcrtorations 5 and 6, through which a screw-threaded rod 7 passes. The rod is mounted on a pivot pin 8 arranged in pertoration (3, and carries at its other end an adjusting not 9 adapted to travel on the threads of the rod. The sleeve has slots 10 and ll arranged to receive the handles When the device is drawn together, shown in 'l in. E5.

The dov c oi my invention is particularly nscl'ul in assembling pistons in engine cylinders. The piston rings are sprung into place on the piston, and the sleeve 1 in open position is placed around the piston and rings. The sleeve is then closed by screwing the nut 9 along: the rod 7. The sleeve should be of sntlicicnt length to en able it to cover all the rings applied to the Serial No. 85,444.

piston and should be 0t such diameter wl'ien closed that it will. hold the rings in place without binding tightly. The piston, With its rings retained in place by the sleeve, is placed over the engine cylinder and the pisston is then pushed down into position in the cylinder. I have found that by the nse o'l' the improved tool described, the asseiinbly may be quickly and conveniently accomplished by one person. Heretot'ore it has ordinarily been necessary to have a helper to hold the rings in place While the mechanic inserting; the piston into the cylinder.

I claim:

1. An appliance for retaining piston rings in position While assembling pistons in engine cylinders, comprising a sleeve having a longitudinal slit therein to permit expansion and contract-ion ot the sleeve, a handle on each side of the slit, said sleeve having a pair of marginal slots to receive the handles. a screw-threaded rod connectingthe handles, and a nut operable on the rod to adjust the position of the handles and to retain them in. adjusted posit-ion.

2. An appliance for retaining piston vin s in position While assembling pistons in cagine cylinders, and comprising a 'l'lertiblc cylindrical inen'iber having a longitudinal slit therein. handles secured to each side ol the slit at a substantial distance from the crises thereof, said edges each. handle, whereby the handles are received in the cut away portions when the cylindrical member is contracted, and means for retaining the handles in adj nsted positions.

HENRY M. BROWN.

beiiip; cut away opposite 

